Bed-warming device



' Npw. DENDY. BED WARMING DEVICE.

APPLICATION FILED OCT- 4 1919.

Patented July 27, 1920.

2 SHEETS-SHEET l.

IIIII:

N. Wl D'ENDY.

BED WARMING DEVICE.

APPLICATION FILED ocT. 4. 1919.

Patented July 27, 1920.

2 SHEETS-SHEET 2.

UNITED STATES NATHANIEL WALKER DENDY, OF ASHEVILLE, NORTH CAROLINA.

BED-WARMING DEVICE.

Specification of Letters Patent.

Application med october 4, 1919. serial No'. 32s 428.

To all whom it may concern.'

Beit known that I, NATHANIEL W. DENDY, a citizen of the Unitedk States, residing at Asheville, in the county of Buncombeand State of North Carolina, have invented new and useful Improvements in Bed-Varming Devices, of which the following is a speciiication. Y

This invention relates to improvements in electric Abed warming devices especially adapted for heatingy beds and for the use of heating or ironing patients for the relief of baclrache, or other ills.

Another object of the invention is vthe provision of a bed warming device, in which the degree of heat may be easily and quickly regulated to suit the convenience of the user.

Another object is the provision of a bed warming device, in which the heating Vclement may be easilyand quickly removed or replaced, or for thepurpose of changing the degreevof heat units of the said heating element. f

A further object is the provision `of a bed Vwarming device in which the heat is evenly distributed throughout the` entire` outer surface thereof and in which the heat will be retained for an appreciable period after the supply of current has been out off.

A still further object of the invention is the provision of a bed warming devicehaw ing a novel form of casing which will per y mit of itsuse for rolling or ironing77 the muscles of the patient for the relief of pain, the construction fiiuther providing a novel form of closure for oner end of the pad, which serves in addition to support the heating element and to properly space one end of the inner and outer cylindrical member of the pad apart to maintainthem in proper' position for the formation of an air chamber.

Other objects and advantages of the in-i vention will appear as the following de scription is read in connection with the accompanying drawings.

In the drawings: Figure 1 is a perspective View of a bed warming device embodying the present invention.

Fig. 2 is a central longitudinal sectional view of the same, showing the heating element in elevation.

Fig. 8 is an elevation of the heating element and its support removed from the v casing.

Fig. 5 is a horizontal section on the line 5 5 of Fig. l.' Y

Fig. 6 is a transverse sectional View through the bed warming device.

Fig. 7 is an elevationk of the bed warming deviceshowing the same inclosed in a casing or cover. ,y v

Referring to the drawings in detail, wherein ,like characters of reference denote corresponding parts, the invention com# prises a preferably cylindrical device, which includes an outer casing 10 and an inner casing 11. The last mentioned casing is aring and is provided at one end with an outwardly and laterally extending flange 12 which is-adapted to rest beneath a flange 13, formed on the outer casing 10. This last mentioned flange is relatively narrow, and the inner and outer casings are heldin proper spaced relation at thisfend through themedium of a closure 14. This is accomplished .by providing the said closure with an inwardly turned bead 15, which engages over the flange 1,3 and holds the flange r12 ofy the inner casing 11 in vproper Arelative position. y f y The opposite ends of both the inner and outer casings are open and are adapted to be closed by a removable closure 16, which is also formed lwith an inwardly extending- Carried by the closure 16 and extendingV within the vinner casing 11, is a hollow tapered memberlf). This member 19 is provided .with a laterally vextending iange 20, which is engaged beneath the bead 17 of the removable closure, `and positioned between this closure and the llange 20 is a lining of asbestos, or other heat resisting material 21. The vouter surface of the closure 16 is also preferably covered withv a layer ofasbestos upon which is secured a covering ofsuitable fabric, as indicatedat 22. This serves to protect the removable closure 16 from the heat, so as to permit of its removal without inconvenience to the user.

In positioningthe closure 16, the I nember 19 is inserted within the inner casing Patented `July 27, 1920.

ranged concentrically within the outer cas-y 11, in a manner to engage and position the adjacent end of the casing and hold it in proper spaced relation with respect to the outer casing l0, so that an air chamber 23 is formed, which entirely surrounds the said inner casing. In addition, the member 19 serves as a support for the heating element, which is herein shown as an incandescent lamp 24, the socket 25 of which is providedV with means for regulating the strength or candle power of the light, thus providing means for regulating the degree of heat supplied within the inner casing. This regulating means may be of any well known form, such as is usually employed in lamps of this character, the meansshown including a rotatable sleeve 26, which' is operated by means of a chain, or other ilexible member 27. The member 27 passes through guide eyes 28 positioned upon each side of the sleeve 26 and downwardthrough openings 29 provided in the tapered meinber 19. Positioned within the member 19 is'a spool or other rotatable member 36, whichis connectedto a disk 31', located upon the outside of the closure 16, so that when the saidl disk is rotated the chain or flexible member 27 will be operated to rotate the sleeve 26 and regulate the lamp 24.

Positioned upon the outside ofr the casing 16' is a ,dial 32, which is provided with indicia to indicate the degree or amount of heat' supplied by the lamp 24; for example, L indicates a low heat, M a medium heat and H high heat; A pointer 33 is carried by the disk 31 and coopera-tes with the dial 32. The lamp 245 is removably mounted within a socket 34, which is mounted upon a base 35, preferably formed of' porcelain, or other suitable insulation. This base is heldibetween ears 36, which may be struck -from or secured to the member 19. The conductors 3S, which are connected to the lamp socket 34, are connected to suitz` le terminals 37, which extend within a soc (et 39 carried by the closure 16. These terminals engage a. plug 40, which is remov ably positioned within thev socket, so that the lamp maybe connected by means of a cord to ay suitable source of current.. It; is preferred to include a switch 111', which is carried by and connected' to the cord, so that thelatter may be conveniently secured in position when the heater-is usedforthe purpose of warming ra bed.

By the use of Valamp of the character shown` as a heating element, the'same may be readily replacedwhen desired atasmall cost. Itis also possible to replace thelamp with one of a different wattage or candle power, so that the maximum heating strength of the bed warming device may be increased or reduced, as desired; for example, when the bed warming device is used for the purpose of warming a bed, a. lamp of suflicient candle power may be employed, which will not generate enough heat to endanger the bed clothing should the heater for any reason be left burning for an indefinite period, while a lamp of increased power may be substituted, if desired, when it is desired to use the heater for heating or ironing the muscles of the body.

Itv will be thus seen that the invention provides a bed warming device in whichthe degree of heat may be regulated, as desired. and which is comparatively inexpensive of operation and upkeep, while its structure serves to evenly distribute the heat over the entire surface of the casing.

lf desired the bed warming device may be incased within a cover or casing l2, which maybe made of cloth or other suitable fabric, so that the liesh of the user will no t' contact with the metallic surface.

The invention is susceptible to various changes in its form, proportions and minor details of construction and the right is herein reserved tomake such changes as properly' fall within the scope of the appended claims.

Having described the invention, what is claimed is:

1. An electric bed warmer comprising a double walled casing having a removable closure at oneend thereof, a non-metallic fabric surrounding the casing, a heating element arranged within the inner wall ai? the double walled casing and closing thel other end thereof, and means located upon the outside of the casing and connected to the heating element for regulating the heat.

2l An electric bed warmer comprising a double walled casing having a removable closure at both ends, a non-metallic fabric surrounding the casing,` a heating element positionedy within the inner casing, an inwardly extending tapered member carried by onev closure and constituting a support for the heating element and engagingtlie adjacent end of the inner wall of the casing to center the same, and means located exteriorly of one closure for regulating the electrical energy to the heating element.

In testimony whereof I`ailix my signa` ture.

NATHANIEL VALKER DENDY. 

